Download Java.io.FileInputStream.read() Method Example

JAVA.IO.FILEINPUTSTREAM.READ METHOD
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Description
The java.io.FileInputStream.read reads a byte of data from this input stream. The method
blocks if no input is available.
Declaration
Following is the declaration for java.io.FileInputStream.read method:
public int read()
Parameters
NA
Return Value
The methods returns the next byte of data, or -1 if the end of the file is reached.
Exception
IOException - If an I/O error occurs
Example
The following example shows the usage of java.io.FileInputStream.read method.
package com.tutorialspoint;
import java.io.IOException;
import java.io.FileInputStream;
public class FileInputStreamDemo {
public static void main(String[] args) throws IOException {
FileInputStream fis = null;
int i = 0;
char c;
try{
// create new file input stream
fis = new FileInputStream("C://test.txt");
// read till the end of the file
while((i=fis.read())!=-1)
{
// converts integer to character
c=(char)i;
// prints character
System.out.print(c);
}
}catch(Exception ex){
// if any error occurs
ex.printStackTrace();
}finally{
// releases all system resources from the streams
if(fis!=null)
fis.close();
}
}
}
Assuming we have a text file c:/test.txt, which has the following content. This file will be used as
an input for our example program:
ABCDEF
Let us compile and run the above program, this will produce the following result:
ABCDEF
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